<template>
  <button @click="modelOpen = true">打开一个对话框</button>
  <!-- 对话框代码 -->
  <Teleport to="body">
    <div v-if="modelOpen" class="modal">
      <div>这是对话框</div>
      <button @click="modelOpen = false">关闭对话框</button>
    </div>
  </Teleport>
</template>
<script lang="ts">
import { defineComponent, ref } from 'vue'
export default defineComponent({
  name: 'App',
  setup(props) {
    // 控制对话框的显示和隐藏
    const modelOpen = ref(false)
    return {
      modelOpen
    }
  }
})
</script>
<style  slope>
.modal {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.modal div {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background-color: white;
  width: 300px;
  height: 300px;
  padding: 5px;
}
</style>
